Effect of serotonergic agents on adenosine A2 receptor mediated catalepsy in mice.
The effect of serotonergic agents was studied on the adenosine A2 receptor agonist NECA-induced catalepsy in mice. The 5-HT releaser fenfluramine, the 5-HT1A agonist 8-OH-DPAT, the 5-HT(2A/1C) receptor agonist DOI and the 5-HT(2A/1C) receptor antagonists ketanserin and mianserin reversed NECA-induced catalepsy. p-MPPI and ketanserin reversed the anticataleptic actions of 8-OH-DPAT and DOI, respectively. Further, the 5-HT reuptake inhibitor fluoxetine, the 5-HT(1B/1C) receptor agonist TFMPP, the 5-HT synthesis inhibitor p-CPA, the selective 5-HT1A receptor antagonist p-MPPI, the 5-HT(1A/1B) receptor antagonist pindolol and the 5-HT3 receptor antagonist LY 278, 584 had no effect on NECA-induced catalepsy. The anticataleptic action of fenfluramine was not affected by pretreatment with p-CPA. In p-CPA treated rats, ketanserin did not affect the anticataleptic effect of fenfluramine, whereas p-MPPI partially reversed this effect. It is concluded that modulation of serotonergic neurotransmission at 5-HT1A and 5-HT(2A/1C) receptors affects the cataleptic action of experimental antipsychotic agents with adenosine A2 receptor agonistic activity.[1]References
- Effect of serotonergic agents on adenosine A2 receptor mediated catalepsy in mice. Mandhane, S.N., Khisti, R.T., Chopde, C.T. Psychopharmacology (Berl.) (1998) [Pubmed]
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